吲哚-3-丁酸无保护流体室温光燐和胶束增稳室温燐光性质的比较

Comparison of Non-Protected Fluid Room Temperature Phosphorescence and Micellar-Stabilized Room Temperature Phosphorescence Properties of Indole-3-Butyric Acid

仔细研究了吲哚- 3- 丁酸(IBA)的无保护流体室温燐光(NP RTP)及以高分子分散剂聚乙二醇2 0 0 ,聚乙二醇 4 0 0和非离子表面活性剂Tween 2 0 ,Tween 4 0 ,Tween 80 ,Tween 85 ,Brij35和乳化剂OP为介质的流体室温燐光性质?砻婊钚约梁透叻肿臃稚⒓聊芤种艻BA燐光猝灭,使其具有更低的检出限,同时也使燐光强度 激发光照射时间曲线发生改变,但不影响IBA燐光光谱特性蘼凼欠翊嬖诒砻婊钚约粱蚋叻肿臃稚⒓?,TlNO3 都不能诱导IBA产生燐光,KI却能诱导其产生强烈燐光糜谇炕屯寥姥分蠭BA的测定,回收率95 .2 %～10. 4 % ,相对标准偏差2 . 4 %～4 . 0 %。

For indole-3-butyric acid (IBA), the non-protected fluid room temperature phosphorescence (NP-RTP) and the fluid room temperature phosphorescence with polymeric dispersant polyethyleneglycol-200 (PEG-200), PEG-400 or non-ionic surfactant Tween-20, Tween-40, Tween-80, Tween-85, Brij35 and emulsifier OP as a medium have been studied in detail. When the surfactants or polymeric dispersants were added to the NP-RTP system, the profile of RTP spectrum was not changed, but the RTP intensity and the pre-irradiation time required to attain a stable RTP signal were increased. Whether the surfactants or polymeric dispersants were added to the system or not, no RTP signal was observed when TlNO3 was used as a heavy atom perturber (HAP), but intense RTP emissions were observed when KI was present as HAP. Recoveries of 95.2%-104% with relative standard deviations of 2.4%-4.0% were obtained in spiked water and soil samples.